CN111750328A

CN111750328A - Light module for a motor vehicle headlight having n sub-light modules arranged side by side in a row

Info

Publication number: CN111750328A
Application number: CN202010204289.4A
Authority: CN
Inventors: R·洛伊特; S·阿诺德
Original assignee: Automotive Lighting Reutlingen GmbH
Current assignee: Marelli Automotive Lighting Reutlingen Germany GmbH
Priority date: 2019-03-29
Filing date: 2020-03-21
Publication date: 2020-10-09
Anticipated expiration: 2040-03-21
Also published as: EP3715705A1; CN111750328B; EP3715705B1; DE102019108233A1

Abstract

A light module for a motor vehicle headlight is proposed, which has n sub-light modules arranged side by side in a row, wherein each ith sub-light module of the i-1 to n sub-light modules has an ith light source, an ith primary optical element assigned to the ith light source and an ith secondary optical element assigned to the ith light source, wherein each sub-light module is provided to illuminate a central solid angle range. The light module is characterized in that the primary optical element of each of the n sub-light modules is arranged and disposed such that a portion of the light emitted from the light source of the sub-light module passes through the secondary optical element of the sub-light module and is thereby directed to the secondary optical element of the sub-light module next adjacent thereto, so that the next adjacent sub-light module illuminates a peripheral solid angle range with light, which peripheral solid angle range is realized by the central solid angle range and at the same time projects laterally over the central solid angle range.

Description

Light module for a motor vehicle headlight having n sub-light modules arranged side by side in a row

Technical Field

The invention relates to a light module for a motor vehicle headlight, comprising n sub-light modules arranged side by side in a row, wherein each ith sub-light module of the i-1 to n sub-light modules comprises an ith light source, an ith primary optical element associated with the ith light source, and an ith secondary optical element associated with the ith light source, wherein each sub-light module is provided to illuminate a central solid angle range. Such optical modules are known, for example, from EP 3163155 a1, DE 102016125887 a1, US 6,948,836B 2 and DE 102005015007 a 1. The periodic arrangement of the individual optical systems is known in particular from this. The individual systems are arranged side by side in a horizontal row when the motor vehicle headlights are used as intended.

Background

Light modules for motor vehicle headlights are usually realized as projection modules, wherein the light distribution generated within the module and thus inside is imaged as an external light distribution onto the road (or measuring screen) by means of a secondary optical element. The secondary optical element is mostly realized as a projection lens. The challenge is generally to shape the internal light distribution by the primary optics accordingly to customer expectations and legal requirements and to simultaneously illuminate the aperture of the projection lens, so that the overall efficiency is high. Overall efficiency is understood here to mean the fraction of the luminous flux emitted from the light source or light sources of the light module in the luminous flux that is ultimately emitted in a solid angle corresponding to the external light distribution.

Disclosure of Invention

It is an object of the present invention to provide an optical module of the type mentioned at the outset, which has an improved overall efficiency.

This object is achieved by the features of claim 1. The primary optical element of each of the n sub-light modules is hereby arranged and disposed such that a portion of the light emitted from the light source of that sub-light module passes through the secondary optical element of that sub-light module and is thereby directed to the secondary optical element of the next adjacent sub-light module to the sub-light module, such that the next adjacent sub-light module illuminates a peripheral solid angle range with light, which peripheral solid angle range is realized by the central solid angle range and at the same time projects laterally beyond the central solid angle range.

The aperture of the secondary optical element available for each light source is thereby increased in combination with the features of the preamble. The enlargement is achieved by illuminating more than one projection lens with a light beam emitted from the light source. An advantageous consequence of the increased aperture is that the light efficiency of the entire system exceeds the sum of the light efficiencies of the individual systems.

The light module is preferably composed of periodically arranged individual optical components, wherein preferably a projection lens is used as secondary optical element. So-called Petzval surface in this context

Or regions of sharp imaging with respective secondary optic projection lenses. A light distribution is generated on the petzval surface within the sub-light modules by the primary optical element. The light distribution is then not only imaged by the individual secondary optics, but also by its next adjacent and possibly also spatially adjacent projection lenses. Thereby rapidly increasing the aperture of light available to each light source. The periodic arrangement enables particularly good control via such imaging. The sub-light modules are optically coupled and can be coordinated with each other by light beams of each light source that respectively illuminate a plurality of projection lenses. Similar to the physical lattice, which is defined by a periodic arrangement, the term module lattice is used below.

A preferred embodiment is characterized in that the correspondence is defined in each case by a light beam which is emitted by the ith light source in the main radiation direction of the ith light source and touches at least the ith primary optical element without touching the other remaining n-1 primary optical elements and touches at least the ith secondary optical element without touching the other remaining n-1 secondary optical elements.

It is also preferred that the row of sub-light modules is oriented horizontally in space in the position of intended use.

It is also preferable that n be 2.

A further preferred embodiment is characterized in that n is greater than or equal to 3, the primary optical element of each sub-optical module being arranged and disposed in the case of an optical module having a sub-optical module adjacent thereto in a spaced relationship, such that a portion of the light emitted from the light source of the sub-optical module passes through the secondary optical element of the sub-optical module and is thus directed onto the secondary optical element of the sub-optical module adjacent thereto in a spaced relationship, so that the sub-optical module adjacent in a spaced relationship illuminates a further peripheral solid angle range with light, which further peripheral solid angle range is realized by the peripheral solid angle range and at the same time projects laterally beyond the peripheral solid angle range.

It is also preferred that each sub-light module illuminates the same central solid angle range as each other sub-light module.

It is also preferred that the light module is arranged to switch the plurality of light sources on and off in common.

A further preferred embodiment is characterized in that the primary optical element is realized as a concave mirror reflector or a transparent solid reflector, lens or catadioptric optical element, respectively.

It is also preferred that each primary optical element of a sub-light module has a region for refracting or reflecting light, which is provided for directing light entering from a light source of the sub-light module towards a secondary optical element partial region of a next adjacent sub-light module.

It is also preferred that the at least one light sub-module has a mirror plate arranged between the primary optical element and the secondary optical element, the mirror plate having an edge which is illuminated by the light beam, wherein the light emitted from the light source of the at least one light sub-module propagates from the primary optical element of the light sub-module to the secondary optical element of the light sub-module.

A further preferred embodiment is characterized in that the secondary optical element is in each case realized as a reflective optical element, a total-reflective optical element, a lens or a combination of these alternatives.

It is also preferable that each secondary optical element is disposed so that an area on the primary optical element side is imaged, and areas to be imaged of secondary optical elements of adjacent sub-optical modules intersect.

It is also preferred that each secondary optical element is a plano-convex projection lens.

A further preferred embodiment is characterized in that each secondary optical element is realized as a combination of two mutually orthogonal roller-shaped optical elements.

It is also preferred that the light module has at least two rows of sub-light modules, wherein each row is oriented horizontally in space in the position used as intended and is arranged offset from each other in the vertical direction.

Further advantages emerge from the following description, the figures and the dependent claims. It is to be understood that the features mentioned above and those yet to be explained below can be used not only in the respectively indicated combination but also in other combinations or individually without leaving the scope of the present invention.

Drawings

Embodiments of the invention are illustrated in the drawings and set forth in more detail in the description below.

In this case, the following are shown in each case in a schematic manner:

fig. 1 shows an exemplary embodiment of a motor vehicle headlight with a light module;

fig. 2 shows a perspective view of an assembly of n-4 sub-light modules;

FIG. 3 shows a top view of the assembly of FIG. 2;

FIG. 4 shows a top view of an individual sub-light module;

FIG. 5 shows a top view of the sub-optical module of FIG. 4 with two exemplary optical paths;

FIG. 6 shows a top view of an assembly of n-4 sub-optical modules and optical paths showing how light from multiple light sources illuminates each projection lens;

FIG. 7 shows a top view of the object of FIG. 6 and the optical paths showing how the light of a single light source is distributed over a plurality of secondary optical elements;

FIG. 8 shows a top view of the object of FIG. 6 and optical paths showing how the internal light distribution of a single sub-light module is imaged by more than one of the other projection lenses;

FIG. 9 shows more schematically the light distribution resulting from imaging;

fig. 10 shows a top view of an assembly of n-4 sub-light modules and of a marking region of the primary optical element, which region enables the light of the light sources of the sub-light modules to be deflected in a targeted manner onto the projection lens of the next adjacent or next-in-between adjacent sub-light modules;

FIG. 11 shows a vertical cross-section of the sub-optical module of FIG. 10;

fig. 12 shows a design of a light module according to the invention, wherein the sub-light module has a multi-piece secondary optical element;

fig. 13 shows a design of a light module according to the invention, wherein the secondary optical element is a reflective secondary optical element; and

fig. 14 shows an embodiment of a photonics module according to the invention with sub-photonics modules arranged regularly and in a matrix in rows and columns.

Detailed Description

In particular, fig. 1 shows an exemplary embodiment of a motor vehicle headlight 10 having a light module 12. The light module 12 is arranged inside a housing 14, the light exit opening of which is covered by a transparent cover 16.

A conventional light module 12 for motor vehicle headlights in projection technology is formed from one or more light sources 18 and a primary optical element 20 (e.g. a reflector), which forms the light within the light module 12. A horizontal mirror plate (spiegelblene) 22 (or a vertical panel (blend)) is used to produce an edge, which is imaged by the secondary optical element 26 as a light/dark boundary of the external light distribution, which is located outside and in front of the motor vehicle headlight 10. Fig. 1 shows, in particular, a vertical sectional view of a motor vehicle headlight 10 and a light module 12. The x direction corresponds to the main radiation direction of the light module 12 and the motor vehicle headlight 10. The y-direction is parallel to the transverse axis of the vehicle and the z-direction is parallel to the vertical axis of the vehicle.

Fig. 2 shows an assembly of n-4 sub-optical modules 24.1 to 24.4. Each sub-optical module 24.1 to 24.4 has the construction described in connection with fig. 1. n-4 sub-optical modules 24.1 to 24.4 are arranged in a row in the y-direction. The y-direction is parallel to the horizontal (horizon) in certain applications. The assembly is periodic. The optical systems (primary and secondary optical elements) of the 4 sub-optical modules 24.1 to 24.4 are not structurally separate from one another and can influence one another. The value n may also be different from 4. In any case greater than or equal to 2.

Fig. 3 shows a top view of the assembly of fig. 2. The light sources 18.1 to 18.4 are assigned precisely to the primary optics 20.1 to 20.4 and precisely to the secondary optics 26.1 to 26.4, respectively. In this case, the correspondence is defined in each case by a light beam 28 which emerges from the light source in the main radiation direction of the ith light source with the number i-1 to n and touches at least the ith primary optical element and the remaining n-1 primary optical elements and the light beam touches at least the ith secondary optical element and the remaining n-1 secondary optical elements. Each secondary optical element 26.1 to 26.4 is preferably, but not necessarily, a plano-convex projection lens.

Unlike sub high beam modules, in which the light sources are connected to the circuit board such that they can be switched on and off or dimmed independently of each other, the light sources of the light module 12 according to the present invention are preferably arranged and connected to be switched on and off collectively.

Fig. 4 shows a top view of an individual sub-light module 24. The concave shape of the panel edge 30 follows the petzval surface 32 of the projection lens 34, which here serves as the secondary optical element 26. The greater the angle α with respect to the central optical axis 36, the wider the imaging by the projection lens 34.

FIG. 5 shows a top view of the sub-optical module 24 of FIG. 4 with two exemplary

optical paths

38, 40. The continuously drawn arrows here, as in the other figures, represent the light paths 40 through the inner region of the sub-light modules 24, which, due to the above-described correspondence, belong to this sub-light module 24 and therefore pass through the projection lens 34 belonging to this sub-light module 24. But not all areas of the petzval surface can be illuminated equally depending on the aperture of the projection lens 34. The arrows shown in dotted lines each represent a light path 38, as in the other figures, which illuminates the area of the petzval surface remote from the axis. This area corresponds to a wider light distribution. But the beam is not available for the light distribution of the sub-light module 24 because it misses the aperture of the projection lens 34.

The imaging properties of the secondary optical element, which is mostly a projection lens, are of decisive significance for the width and intensity of the light distribution outside the projection module. If a clearly imaged surface is concerned, i.e. the petzval surface 32 of the projection lens 34, an angle α with respect to the central optical axis 36 of the projection lens 34 is defined as shown in fig. 4. The larger the angle at which the internal light distribution is imaged by the projection lens 34, the wider the resulting external light distribution. The internal light distribution is the region of the secondary optical element on the primary light source element side, which region forms the external light distribution via the secondary optical element. However, for the exit of the projection lens 34, an internal light path 40 must be considered, which is illustrated in fig. 5 as a continuous arrow. Its petzval surface 32 is not arbitrarily illuminated through the limited aperture of the projection lens 34. The continuous arrows in fig. 5 and in the other figures respectively show the light paths 40 which intersect the petzval surface relatively close to the axis, meet the projection lens 34 and can thus contribute to the external light distribution. While the dotted light path 38 illuminates the area of the petzval surface 32 remote from the axis, but extends outside the aperture of the projection lens 34 and is therefore not used for external light distribution.

As an undesirable consequence, the width of the external light distribution is greatly limited by the geometry of the individual sub-light modules 24. This undesirable effect is magnified due to the dominant trend toward miniaturization.

How to overcome the undesirable limitations by combining multiple sub-optical modules 24 in a periodic lattice arrangement is set forth below with reference to fig. 6 and 7.

Fig. 6 shows a top view of the assembly of n-4 sub-optical modules 24.1 to 24.4 and the

optical paths

38, 40, which show how the light of the plurality of light sources 18.1 to 18.4 illuminates the respective projection lenses 34.1 to 34.4. A physical crystal lattice, similar to a 1-dimensional crystal, is created by periodically arranging the same projection lenses 34.1 to 34.4. The light distribution of the interior of the sub-light modules is imaged in higher orders by the adjacent projection lenses and considering an individual sub-light module as a base unit makes it possible to predict the overall external light distribution of the module lattice. Fig. 6 shows, in particular, that, in the case of a periodic arrangement, the aperture of the projection lens 34.2 of a sub-light module 24.2 is also used with the light of the sub-light modules 24.1, 24.3 next adjacent to this sub-light module 24.2 and the sub-light module 24.4 next to the space (dotted light path 38). The projection lens 34.2 illuminated thereby therefore covers a much larger angle of incidence area than when illuminated solely by the primary optical element 20.2 associated with this projection lens 34.2.

Fig. 7 shows a top view of the object of fig. 6 and the light path showing how the light of a single light source is distributed over a plurality of secondary optical elements.

Fig. 7 shows, in particular, a top view of the object of fig. 6 and the light path, which shows how the light of a single light source is distributed over a plurality of secondary optical elements.

Fig. 7 shows how the primary optics 20.2 of a sub-light module 24.2 illuminates not only the projection lens 34.2 provided for the primary optics, but also additionally the projection lenses 34.1, 34.3 of the next adjacent sub-light module 24.1, 24.3 and the projection lens 34.4 of the next adjacent sub-light module 24.4. This applies similarly to all sub-optical modules and contributes to the advantage of significant utility improvement.

Fig. 6 and 7 generally show that the aperture of a single lens is used not only by the corresponding primary optical element, but also by its neighboring primary optical elements. At the same time, each primary optical element uses not only one aperture but also the apertures of adjacent sub-optical modules, which further improves the optical efficiency of the system.

The resulting light distribution is not random or diffuse.

Fig. 8 shows a top view of the object of fig. 3 and the

light paths

42, 44, 46, which show that the light distribution 48 inside a single light sub-module 24.2 is not only imaged by the projection lens 34.2 of this light sub-module 24.2, but additionally also imaged by more than one projection lens 34.3, 34.4 of the other light sub-modules 24.3, 24.4.

Fig. 9 shows a highly schematic representation of the external

light distribution

50, 52, 54 resulting from imaging, which is arranged on a screen arranged in front of the motor vehicle headlight perpendicular to the main beam direction. The angular deviations from the main radiation direction are plotted to the left (negative) and to the right on the abscissa and the angular deviations of the light radiation direction of the light module from the main radiation direction (0 ° ) are plotted to the upper (positive) and lower (negative) on the ordinate. The ordinate value 0 corresponds to the height of the horizontal line. The dotted line corresponds to the bright-dark boundary 56 of the asymmetric light distribution. In the vertical direction only the upper light distribution 50 is depicted in a positionally correct manner. The other two

light distributions

52, 54 are shown vertically offset for clarity. The

light distribution

50, 52, 54 is in fact arranged vertically level.

Each of the three outer

light distributions

50, 52, 54 is an image of its inner light distribution 48 in fig. 8. The internal light distribution 48 is imaged by a plurality of adjacent projection lenses 34.2, 34.3, 34.4 at different angles. Each of the external

light distributions

50, 52, 54 corresponds to a solid angle corresponding to the imaging order of the projection lenses 34.2, 34.3, 34.4: the uppermost solid angle corresponds to a 0-order imaging of the internal light distribution 48. The outer, intermediate light distribution 52 results from the inner light distribution 48 of a light sub-module being imaged by the projection lens of the next adjacent light sub-module and corresponds to the 1 st step. The lowermost light distribution 54 results from the internal light distribution 48 of a light sub-module, which is imaged by the projection lens of the light sub-module adjacent to the light sub-module and corresponds to the 2 nd step. The solid angle of the image partially penetrates (overlaps), which causes the external

light distributions

50, 52, 54 to overlap in the horizontal direction and the light distributions to widen in the horizontal direction as desired. In the same way as the left-hand widening shown in fig. 9, a right-hand widening is also obtained, since this principle naturally also acts symmetrically on the other side.

Fig. 8 and 9 show in particular a design in which the primary optical element 20.2 of each sub-optical module 24.2 is arranged and arranged in the case of an optical module having a sub-optical module 24.4 adjacent to its bay, in such a way that a portion of the light emitted from the light source 18.2 of this sub-optical module 24.2 passes through the secondary optical element 26.2 of this sub-optical module 24.2 and is thus directed to the secondary optical element 26.4 of the sub-optical module 24.4 adjacent to this sub-optical module 24.2 bay, so that the bay-adjacent sub-optical module 24.4 illuminates with light a further peripheral solid angle range, which is realized by the peripheral solid angle range and which at the same time projects laterally beyond the peripheral solid angle range.

In this case, each light sub-module 24.i preferably illuminates the same central solid angle range as every other light sub-module, i being 1 to n. Each secondary optical element is disposed so as to form a region on the primary optical element side. The areas to be formed of the sub-light modules adjacent to the secondary optical element intersect.

Fig. 8 and 9 show the principle of higher-order imaging, in particular simultaneously. The light distribution inside the light sub-modules is imaged in different angular ranges by different projection lenses of different light sub-modules. Horizontal misalignments occur, which are precisely defined by the focal length of the projection lens and the periodicity of the module lattice and can therefore be designed specifically when constructing the light module. When the sub light modules are arranged along a horizontal line, there is no misalignment in the vertical direction. The effectiveness of the external light distribution obtained thereby and the achievable horizontal width are significantly improved by multiple imaging at higher orders.

Accordingly, the inner area of a sub-light module is characterized not only by avoiding separate panels (as is present in some sub-high beam modules), but also by sections of the primary optical element being arranged such that the light is precisely deflected into the adjacent projection lenses of the adjacent sub-light modules.

Fig. 10 shows sections 58.1 to 58.4 of the primary optics 20.1 to 20.4, which are designed as higher steps. In this case, the segments can be continuously and unequally and continuously differentially transferred into the remaining primary optical element.

In this connection, the segments are designed according to the stated object in such a way that they are directed toward the projection lens of the next adjacent or next-adjacent light sub-module in order to deflect the light of the light source of the light sub-module in a targeted manner.

Fig. 11 shows a vertical section of the sub optical module in fig. 10 in a vertical sectional view. In this illustration, the triangular sections 58 of the primary optics 20 are arranged to illuminate the projection lens adjacent to the projection lens 34 shown (see fig. 8) and thus to produce higher-order images.

Fig. 12 shows a design of a light module 12 according to the invention, wherein the sub-light module has a multi-part secondary optical element 26. The secondary optics 26 of each sub-optical module 24 is composed here of two roller-shaped optics (Walzenoptiken)60, 62. The axes of the roller-shaped optical elements are here positioned transversely to one another.

Fig. 13 shows a configuration in which the secondary optics 26 are reflective secondary optics 64, in particular a half-shell reflector. Instead of a specularly coated half-shell reflector, a transparent solid reflector is also conceivable, which has an interface at which the internal total reflection occurs.

In contrast to fig. 13, the secondary optics can be embodied as reflective optics, total-reflective optics, lenses, or combinations of these alternatives, respectively. The secondary optical element may be composed of a plurality of optical members. The primary optical element may also be realized as a reflective optical element, a total reflective optical element, a lens or a combination thereof.

Fig. 14 shows a configuration of a light module 12 according to the invention with sub-light modules 24 of the light module, which are arranged regularly in rows and columns and in a matrix. The module lattice can thus be configured to be multidimensional. The total number n of coupled sub optical modules of an optical module is not determined to be a specific value, but is at least two.

There may be horizontal, vertical or no panels in the interior of the sub-light modules for creating a light-dark boundary (see fig. 1, panel 22).

Claims

1. Light module (12) for a motor vehicle headlight (10), having n sub-light modules (24.1, 24.2, 24.3, 24.4) arranged side by side in a row, wherein each i-th sub-light module of the 1 to n sub-light modules has an i-th light source (18.1, 18.2, 18.3, 18.4), an i-th primary optical element (20.1, 20.2, 20.3, 20.4) assigned to the i-th light source, and an i-th secondary optical element (26.1, 26.2, 26.3, 26.4) assigned to the i-th light source, wherein each sub-light module is provided to illuminate a central solid angle range, characterized in that the primary optical element of each of the n sub-light modules (24.2) is provided and arranged such that a portion of the light emitted from the light source (18.2) of that sub-light module (24.2) passes through the secondary optical element (26.2) of that sub-light module (24.2) and thus is directed to the next sub-light module (24.2) of that sub-light module (24.2), so that the next adjacent sub-light module (24.3) illuminates with light a peripheral solid angle range which is realized by the central solid angle range and which at the same time projects laterally beyond the central solid angle range.

2. The light module (12) according to claim 1, characterized in that the correspondence is defined by light beams (28) respectively, which are emitted by the ith light source in the main radiation direction of the ith light source and touch at least the ith primary optic without touching the other remaining n-1 primary optics, and just touch at least the ith secondary optic without touching the other remaining n-1 secondary optics.

3. The light module (12) according to claim 1, characterized in that the row of sub-light modules is oriented horizontally in space in the position of intended use.

4. The light module (12) according to any of claims 1 to 3, characterized in that n-2.

5. A light module according to any one of claims 1 to 3, characterized in that n is greater than or equal to 3, and that the primary optical element (20.2) of each sub-light module (24.2) is provided and arranged in the case of a light module (12) having a sub-light module (24.4) which is spatially adjacent thereto, such that a portion of the light emitted from the light source (18.2) of that sub-light module passes through the secondary optical element (26.2) of that sub-light module and is thereby directed to the secondary optical element (26.4) of the sub-light module (24.4) which is spatially adjacent thereto, so that the spatially adjacent sub-light module illuminates a peripheral solid angle range which is realized by the peripheral solid angle range and which at the same time laterally projects above the peripheral solid angle range.

6. The light module (12) according to any one of the preceding claims, characterized in that each sub-light module (24.1, 24.2, 24.3, 24.4) illuminates the same central solid angle range as each other sub-light module.

7. The light module (12) according to any one of the preceding claims, characterized in that the light module (12) is arranged to switch a plurality of light sources (18.1, 18.2, 18.3, 18.4) on and off in common.

8. The light module (12) according to any one of the preceding claims, characterized in that the primary optical elements (20.1, 20.2, 20.3, 20.4) are realized as concave mirror reflectors or transparent solid reflectors, lenses or catadioptric optical elements, respectively.

9. The light module (12) according to any of the preceding claims, characterized in that each primary optical element (20.1, 20.2, 20.3, 20.4) of one sub-light module (24.1, 24.2, 24.3, 24.4) has a section (58.1, 58.2, 58.3, 58.4) refracting or reflecting light, said section being arranged for directing light incoming from the light source of that sub-light module towards the secondary optical element of a next adjacent sub-light module and/or the secondary optical element of a next adjacent sub-light module.

10. The light module (12) according to one of the preceding claims, characterized in that at least one sub-light module (24.i) has a mirror plate (22) arranged between the primary optical element and the secondary optical element, which mirror plate has an edge which is illuminated by a light beam, in which light emitted from the light source of at least one sub-light module propagates from the primary optical element of the sub-light module to the secondary optical element of the sub-light module.

11. The light module (12) according to any one of the preceding claims, characterized in that the secondary optical element is realized as a reflective optical element, a total reflective optical element, a lens, or a combination of these alternatives, respectively.

12. The light module (12) according to claim 11, characterized in that each secondary optical element is arranged to image an area on the side of the primary optical element and the areas to be imaged of the secondary optical elements of adjacent sub-light modules intersect.

13. The light module (12) according to claim 11, characterized in that each secondary optical element is a plano-convex projection lens.

14. The light module (12) according to claim 11, characterized in that each secondary optical element is realized as a combination of two roller-like optical elements orthogonal to each other.

15. Light module (12) according to any of the preceding claims, characterized in that the light module has at least two rows of sub-light modules, wherein each row is oriented horizontally in space and arranged offset from each other in vertical direction in a position of intended use.